The study aims to utilize medical devices, such as the Xtreme CT and XCT 3000, to assess bone and muscle microarchitecture for various pathologies. The devices provide crucial data on bone and muscle density, aiding in understanding fracture risks associated with conditions like rheumatoid arthritis and neurological disorders. Current methods like DXA scanning have limitations in predicting fracture risks accurately due to their inability to assess cortical and trabecular microstructure. The study emphasizes the importance of evaluating cortical porosity and trabecular volume loss, especially in conditions like post-menopausal osteoporosis and sarcopenia. Additionally, it explores the impact of neurological disorders, renal insufficiency, and endocrinopathies on bone health. Furthermore, the study aims to establish a control group to differentiate pathological changes from age-related variations. Expected outcomes include a comprehensive understanding of bone microarchitecture alterations across various pathologies and the potential to improve fracture risk estimation beyond conventional methods like DEXA scanning. Ultimately, the study anticipates facilitating better management strategies to reduce fracture risks associated with these conditions.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
1,000
Xtreme CT® device is a high resolution peripheral quantitative computed tomography (HR-pQCT) used to measure bone density and quantify the bone architecture to 3D at the extremities of the human body. For the study, the device will be used to assess bone density and microarchitecture at the forearm and shin for a systemic effect. In rheumatoid arthritis, bone density and microarchitecture will also be measured at the metacarpophalangeal.
Peripheral Quantitative Computed Tomography (pQCT) will be performed and measure bone and muscle parameters.
The Lunar Dual Energy X-ray Absorptiometry (DEXA) is a third generation multi-captor DEXA device that allow short duration measurements. It measures Bone Mineral Density (BMD) at the spine and the femoral neck.
Chu Saint Etienne
Saint-Etienne, France
RECRUITINGtotal volumetric mineral density by HR-pQCT
Describe total volumetric mineral density (mg/ccm HA) as a function of pathologies
Time frame: Day 1
trabecular volumetric mineral density by HR-pQCT
Describe trabecular volumetric mineral density (mg/ccm HA) as a function of pathologies.
Time frame: Day 1
Cortical volumetric mineral density by HR-pQCT
Describe cortical volumetric mineral density (mg/ccm HA) as a function of pathologies.
Time frame: Day 1
Describe number of trabeculae by HR-pQCT
Number of trabeculae (1/mm) as a function of pathologies.
Time frame: Day 1
Trabecular thickness by HR-pQCT
Describe trabecular thickness (mm) as a function of pathologies.
Time frame: Day 1
cortical thickness (mm) by HR-pQCT
Describe cortical thickness (mm) as a function of pathologies.
Time frame: Day 1
trabecular separation by HR-pQCT
Describe trabecular separation (mm) as a function of pathologies.
Time frame: Day 1
cortical porosity by HR-pQCT
Describe cortical porosity (%) as a function of pathologies.
Time frame: Day 1
Total bone mineral content with pQCT
Total bone mineral content (mg)
Time frame: Day 1
Total bone surface with pQCT
Total bone surface (mm2)
Time frame: Day 1
Total bone density with pQCT
Total bone density (mg/mm3)
Time frame: Day 1
Cortical and trabecular density with pQCT
Cortical and trabecular density (mg/mm3)
Time frame: Day 1
bone resistance index with pQCT
bone resistance index (g2/mm)
Time frame: Day 1
Bone density by DEXA
Parameter measured by DEXA is Bone Mineral Density (BMD, g/cm2).
Time frame: Day 1
volumetric mineral density with HR-PQCT
Total volumetric mineral density (mg/ccm HA)
Time frame: Day 1
Trabecular volumetric mineral density with HR-PQCT
Trabecular volumetric mineral density (mg/ccm HA)
Time frame: Day 1
Cortical volumetric mineral density with HR-PQCT
Cortical volumetric mineral density (mg/ccm HA).
Time frame: Day 1
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